Check out the link at the bottom and at the bottom of http://potomac-homes.net/thermal-imaging.htm
Jacques Sirvain is a great inspector 
He’s also one of my closest competitors, so here are my hot infrared sites.
www.infrared-diagnostics.com
www.iti.richnspect.com
The iti.richnspect.com site will be completely revamped soon!
Kevin